62002 is zip code located in Alton, Illinois. The population is 32,292, making 62002 the largest zipcode in Alton and the 3rd largest in Madison County.
There are 7 public schools in 62002 with an average Homefacts rating of C-. The total crime rate for Alton is high , and there are 6 registered sex offenders residing in the zip code 62002. Unemployment in 62002 is high.
Zip codes within Alton include 62018.